JP2002082375A - Camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a camera the number of parts of which is reduced, the structure is made compact, the cost is low and with which problems that film is exposed due to erroneous opening of a cartridge cover and double exposure caused by reusing the film are prevented. SOLUTION: In the camera provided with a locking member 50 installed to be movable between a locking position, at which the cartridge cover is locked at a closing position and a release position at which locking is released; a locking control member 64 which is connected with a member to be driven to which the driving force of a film feeding motor is transmitted, by which the movement of the locking member 50 is stopped by positioning at a first position, until the film is rewound after winding the film by the film feeding motor; and the movement of the locking member 50 is stopped by positioning at a second position, while rewinding the film by the film feeding motor and the movement of the locking member 50 is allowed by positioning between the first position and the second position, in a state where the film cartridge can be taken out is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera for controlling removal of a film cartridge.

[0002]

2. Description of the Related Art It is known for a camera to restrict removal of a film cartridge so that the film cartridge is not removed by mistake or carelessly.

For example, a cartridge lid is locked during film feeding or photographing, and is unlocked during film rewinding, so that a film cartridge can be taken out. There are two lock levers that do not enter the opening operation of the cartridge lid even when the cartridge lid is opened except when the cartridge lid should be opened using the electric driving force. Each locks the cartridge lid during film feeding or film rewinding.

[0004]

By the way, the opening / closing of the cartridge lid is locked during the feeding or shooting of the film, and the lock is released during the rewinding of the film.
When the shooting is completed and the film rewinding starts, the lock of the cartridge lid opening and closing is released, so if the photographer accidentally tries to open the cartridge lid while rewinding the film, the film will be exposed or the film cartridge Before the data disc is set to "captured", a problem occurs in that the film is taken out and reused (double exposure).

[0005] Further, in the case where the cartridge lid is opened and closed electrically, it is possible to prevent problems such as exposure of the film by erroneously opening the cartridge lid and double exposure by reusing the film. A force switching mechanism is required, which is disadvantageous in size and cost.

Further, even if two lock members (for winding and rewinding) are provided, there is a problem that the film is exposed by accidentally opening the cartridge lid, or that the film is reused for double exposure. Although it can be prevented, the number of parts increases, which is disadvantageous in size and cost.

The present invention has been made in view of the above circumstances, and has a small number of parts, a compact structure, a low cost, and a cartridge lid is accidentally opened to expose a film or to reuse a film to form a double. It is an object of the present invention to provide a camera capable of preventing problems such as exposure.

[0008]

Means for Solving the Problems In order to solve the above problems and achieve the object, the present invention has the following constitution.

According to a first aspect of the present invention, there is provided a cartridge cover movably provided between an open position for opening a cartridge chamber and a closed position for closing a cartridge chamber so that a film cartridge can be taken out. And a camera provided with a lock member movably provided between a lock position for locking the cartridge lid at the closed position and a release position for releasing the lock, wherein the driven force transmitted by the driving force of the film feed motor is transmitted. The first member is connected to the first member and is positioned at the first position to prevent the lock member from moving from the locked position to the released position until the film is rewound after the film has been wound by the film feed motor. While the film is being rewound by the feed motor, the film is located at the second position and the lock member is moved from the locked position to the released position. And a lock control member which is located between the first position and the second position and allows the lock member to move from the lock position to the release position when the film cartridge can be taken out. A camera characterized by the following. ].

According to the first aspect of the present invention, the film cartridge is locked until the film is rewound after the film is wound up and also while the film is rewound, so that the film cartridge can be taken out. Since the lock is released in an unusual state, there is no accidental exposure or reuse and double exposure.

According to a second aspect of the present invention, there is provided a method as described above, wherein the lock control member is moved between the first position and the second position by rotating the film feed motor in a rewinding direction. 2. The camera according to claim 1, wherein the camera is moved by rotating the film feeding motor in a film winding direction in a state where the camera is moved to the second position. ].

According to the second aspect of the invention, since the lock control member is moved by rotating the film feed motor, a special drive source is unnecessary, and the miniaturization of the camera is not hindered. , Less cost increase.

According to a third aspect of the present invention, there is provided an unlocked state detecting sensor for detecting an unlocked state between the first position and the second position of the lock control member. The camera according to claim 2. ].

According to the third aspect of the present invention, by detecting the unlocked state of the lock control member between the first position and the second position, the lock can be reliably released by simple control. .

According to a fourth aspect of the present invention, a play is provided between the driven member and a spool driver for driving a spool shaft of the film cartridge, and a play is provided between the first position of the lock control member and the first position of the lock control member. The camera according to any one of claims 1 to 3, wherein rotation of the spool driver shaft is restricted by movement between the second positions. ].

According to the fourth aspect of the present invention, the spool driver does not rotate due to the movement of the lock control member with a simple structure provided by play provided between the driven member and the spool driver, and the data of the film cartridge is stored. Disk setting is easy.

According to a fifth aspect of the present invention, there is provided a lid opening / closing lever for opening / closing a cartridge lid, and a lid opening / closing lever minute operation detecting switch for detecting an initial minute operation for opening the lid opening / closing lever. When trying to enter the operation of moving the lock member from the lock position to the release position, if the lid opening / closing lever minute operation detection switch is on,
The camera according to any one of claims 1 to 4, wherein the camera does not shift to the operation of the lock control member that allows the lock member to move from the lock position to the release position until the lock member is turned off. ].

According to the fifth aspect of the present invention, when the operation of moving the lock member from the lock position to the release position is attempted, if the lid open / close lever minute operation detection switch is on, the switch is turned off. By not shifting to the operation of the lock control member that allows the lock member to move from the lock position to the release position until now, it is possible to save energy and quickly prevent failure in unlocking.

According to a sixth aspect of the present invention, a limiter is provided for the operation of moving the lock member from the lock position to the release position, and the limit of the limiter is equal to or less than the play amount provided between the driven member and the spool driver. The camera according to claim 1, wherein the camera is set to: ].

According to the sixth aspect of the present invention, the limit of the operation of moving the lock member from the lock position to the release position is set to be equal to or less than the play amount provided between the driven member and the spool driver. It is possible to prevent the spool driver from rotating due to the operation of the lock control member that allows the movement from the lock position to the release position.

According to a seventh aspect of the present invention, there is provided a method for reading a data disk after loading a film cartridge and performing an operation of sending a film from the film cartridge after completion, after setting the same data disk as when loading the film. 7. The method according to claim 1, wherein:
Camera according to item. ].

According to the seventh aspect of the present invention, even if the cartridge lid is opened at an unexpected timing, the film cartridge is taken out at the same data disk position as that in the loaded state, so that unused photographic film can be used. It is no longer possible to use it again after it has been used up or not to use it up and to use it twice.

According to an eighth aspect of the present invention, there is provided a case where a film cartridge is loaded and a film feeding motor is controlled in a rewinding direction to read information on a data disk, and as a result, the film is fed to a shooting start frame. 7. The method according to claim 1, wherein the rewinding direction control is set to the position of the data disk at the time of loading the film cartridge, and then the operation is switched to the operation in the winding direction for feeding the film. Camera according to item. ].

According to the eighth aspect of the present invention, even if the cartridge lid is opened at an unexpected timing, the position of the data disk at the time of loading the film cartridge is set by the rewind direction control, and then the film is sent out. The film is fed up to the shooting start frame by switching to the operation in the winding direction, so that unused photographic film becomes used up and becomes unusable, or used up becomes unused and double exposure occurs. Absent.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the camera according to the present invention will be described in detail with reference to the drawings.

FIGS. 1 to 3 show a camera to which the present invention is applied. FIG. 1 is a sectional view of the camera, FIG. 2 is a sectional view showing a film feeding mechanism of the camera, and FIG. 3 is a film feeding mechanism of the camera. FIG.

At the center of the camera 1, a photographing lens unit 3 having a photographing lens 2 is provided movably in the optical axis direction. A cartridge chamber 4 is arranged on one side of the taking lens unit 3, and a reel chamber 5 is arranged on the other side. A film cartridge 6 is loaded in the cartridge chamber 4, and a photographic film F is taken up from the film cartridge 6 through an image frame tunnel 7 to a reel 8 arranged in the reel chamber 5. A guide plate 9 is provided in the reel chamber 5.
The guide roller 10 provided at the tip of the guide plate 9 guides the photographic film F to be wound around the reel 8.

A gear train 11 is arranged on the bottom side of the camera 1, and a gear train 12 is arranged on the upper surface side. The gear train 11 and the gear train 12 are linked by a connecting shaft 13. A film feed motor M1 is disposed inside the reel 8, and the drive train 15 of the output shaft 14 of the film feed motor M1 drives the gear train 11. In the gear train 11, a one-way clutch 16 serving as clutch means, planetary gears 17a and 17b, and a sun gear 17e are arranged. Planetary gears 17a, 17
b is rotatably supported by a support lever 17c, and the support lever 17c is rotatably supported by a support shaft 17d of a sun gear 17e.

The gear train 12 drives a spool driver driving gear 18, and the spool driver driving gear 18
Inside, a spool driver holder 19 is arranged. The spool driver holder 19 is provided with a spool driver 20. A spool shaft 21 is rotatably provided in the film cartridge 6, and an engagement recess 21a is formed at one end of the spool shaft 21 and a support recess 21b is formed at the other end.

When the film cartridge 6 is loaded in the cartridge chamber 4, the spool driver 20 is engaged with the engaging recess 21 a of the spool shaft 21. The spool driver 20 is urged by a spring 22 so as to be able to smoothly engage with the engaging recess 21a.

A cartridge cover 23 is provided on the bottom side of the camera 1.
When the cartridge lid 23 is closed, the support boss 24 is inserted into the support recess 21b, and the photographic film F
Is rotatable.

When the film cartridge 6 is loaded in the cartridge chamber 4 and the film feed motor M1 is rotated in the film pushing direction, the gear train 11 is driven in the film pushing direction by the driving gear 15 of the output shaft 14, and the gear train 1 is driven.
By the rotation of 1, the planetary gear 17a automatically meshes with the drive gear 30 of the reel 8, the planetary gear 17b meshes with the one-way clutch 16, and rotates the reel 8 in the film winding direction.

On the other hand, the gear train 12 rotates in conjunction with the one-way clutch 16 and the connecting shaft 13, and pushes out the spool shaft 21 through the spool driver driving gear 18, the spool driver holder 19, and the spool driver 20. The photographic film F is pushed out of the film cartridge 6 by rotating in the direction. The photographic film F passes through the image frame tunnel 7, enters the reel chamber 5 from the reel chamber entrance 5a, and the leading end of the photographic film F is transported along the wall surface of the reel chamber 5, and is guided through the guide plate 9 and the guide roller 10. The photographic film F is wound up to the shooting start frame by the rotation of the reel 8.

At the time of photographing, when the film feed motor M1 is rotated in the same direction as the film pushing direction, the output shaft 1
The drive gear 15 drives the gear train 11 in the film winding direction, and the rotation of the gear train 11 automatically meshes the planetary gear 17a with the drive gear 30 of the reel 8 to rotate the reel 8 in the film winding direction.

Since the rotation speed of the reel 8 in the film winding direction is high, the drive from the planetary gear 17b is not transmitted by the one-way clutch 16 and the reel 8
The photographic film F is wound up to the shooting end frame by the rotation of.

When the photographing is completed, the film feeding motor M
1 is rotated in the film rewinding direction and the driving gear 15 of the output shaft 14 drives the gear train 11 in the film rewinding direction, and the rotation of the gear train 11 automatically causes the planetary gear 17b to engage in the one-way clutch. 16, the planetary gear 17 a is disengaged from the drive gear 30 of the reel 8, meshes with the intermediate gear 31, the gear train 12 interlocks and rotates reversely via the connection shaft 13, and the spool driver drive gear The photographic film F is rewound on the spool shaft 21 of the film cartridge 6 by rotating the spool shaft 21 in the film rewinding direction via the spool driver holder 19 and the spool driver 20.

FIG. 4 is a perspective view showing the cartridge chamber of the camera from the bottom side, and FIG. 5 is a perspective view of the film cartridge.

The camera 1 identifies whether the photographic film F in the loaded film cartridge 6 has not been exposed or is in any other use state. The camera 1 has a cartridge chamber 4
Are formed, and the bottom surface thereof is an opening 40.
This opening 40 is opened and opened by the cartridge lid 23, and when the cartridge lid 23 is closed, the lid opening / closing lever 41 provided on the side surface of the camera 1 is urged by a spring 57 in FIG. .

If the cover opening / closing lever 41 is repeatedly slid in the direction of the arrow, the cartridge cover 23 is opened and the film cartridge 6 can be loaded and unloaded.

The film cartridge 6 is loaded into the cartridge chamber 4 with the data disk 42 facing upward. The spool driver 2 is located at a position facing the engaging recess 21a of the spool shaft 21 of the film cartridge 6.
A drive shaft 45 for opening and closing is provided at a position facing the engaging hole 44 of the lid member 43 so as to protrude from the inner wall of the upper surface of the cartridge chamber 4, and the corresponding engaging hole 44 of the loaded film cartridge 6 is provided. Is inserted into.

Further, a reflection type photosensor S10 is disposed at a position facing the identification opening 46. The photosensor S10 emits detection light from the light emitting unit, and receives the light reflected by the data disk 42 through the identification opening 46 at the light receiving unit. Then, it outputs a photoelectric signal according to the light intensity of the reflected light. This photoelectric signal is used for identifying a use state and reading information of a code pattern.

The operation of reading the data disk after loading the film cartridge 6 and the operation of sending the film from the film cartridge 6 after completion are performed after setting the same data disk 42 as when loading the film. Even if the cartridge lid 23 is opened at an unexpected timing, since the film cartridge 6 is taken out at the same position of the data disk 42 as in the loaded state, the unused photographic film becomes used and becomes unusable or used. It is not used and double exposure does not occur.

When the film cartridge 6 is loaded and the information on the data disk 42 is read by controlling the film feed motor M1 in the rewind direction and the film is fed to the shooting start frame, the rewind direction is set. After the control is set to the position of the data disk 42 when the film cartridge is loaded, the operation is switched to the operation in the winding direction for feeding the film. After setting the position of the data disk 42 at the time of loading the film cartridge by the rewind direction control, the operation is switched to the operation of the winding direction for feeding the film, and the film is fed to the shooting start frame, so that unused photographic film is used. It is no longer possible to use it again after it has been used up or not to use it up and to use it twice.

6 to 11 show the cartridge lid opening / closing mechanism, FIG. 6 is a front view showing the cartridge chamber, FIG. 7 is a side view showing the cartridge lid opening / closing mechanism, FIG. 8 is a front view showing the cartridge lid opening / closing mechanism, 9 is a view showing a locked state of the cartridge lid, FIG. 10 is a view showing an unlocked state of the cartridge lid, and FIG. 11 is a view showing an operation of the lock control member.

The camera 1 is provided with a cartridge lid 23 and a lock member 50. Cartridge lid 2
3 has a lock claw 23a on the inside, and a cartridge chamber 4 so that the film cartridge 6 can be taken out.
The cartridge chamber 4 is movably provided between an open position P1 for opening the cartridge and a closed position P2 for closing the cartridge chamber 4.

The lock member 50 is rotatably supported by the support shaft 51 and has a lock position P3 for locking the cartridge lid 23 in the closed position shown in FIG. 9 and a release position P4 for releasing the lock shown in FIG. It is provided movably between.

The lock member 50 has a lock claw 50a, a stopper claw 50b, and an operating pin 50c. The lock claw 50a engages with the lock claw 23a, and locks the cartridge lid 23 to the closed position when the lock member 50 is located at the lock position P3 as shown in FIG. In this locked state, the lock claw 23a pushes the holding lever 52 against the spring 53 to separate the holding lever 52 from the lock claw 50a.

The holding lever 52 is rotatably supported by a support shaft 54, and a spring 53 is provided between the holding lever 52 and the lock member 50. The spring 53 locks the holding lever 52 to a lock claw 50a. It is urged in the direction to be.

When the lock claw 50a is disengaged from the lock claw 23a and the lock member 50 is located at the release position P4 as shown in FIG. 10, the cartridge cover 23 is moved to the open position P1 to open the cartridge cover 23. Holding lever 5
2 engages with the lock claw 50a to hold the lock member 50 in the unlocked state.

The operation of the lock member 50 is performed by the operation plate 55. The operation plate 55 is rotatably supported by a support shaft 56, and a distal end 55a of the operation plate 55 is
Is urged by a spring 57 so as to be spaced apart from the main body.

The operation plate 55 is connected to the lid opening / closing lever 41, and the operation plate 55 is moved by the operation of the lid opening / closing lever 41 as shown in FIG.
Then, the lock member 50 is moved to the release position P4 from the state shown in FIG.

A detection piece 55b is formed on the operation plate 55, and the lid opening / closing lever minute movement detection sensor S11 can detect a minute movement of the lid opening / closing lever 41 by the detection piece 55b. The lid opening / closing lever minute movement detection sensor S11 is configured by detection contact pieces 58a and 58b.

When the operation plate 55 is operated and the detection piece 55b pushes the projection 58a1 of the detection piece 58a, the detection piece 58a is pressed.
a and 58b come into contact with each other to detect a minute movement of the lid opening / closing lever 41.

The operation of the light lock door lever 60 is regulated by the lock member 50. The light lock door lever 60 is urged in the locking direction by a spring 63. When the lock member 50 is at the lock position P3, the lock piece 60a of the light lock door lever 60 is in a position rotated in a direction in which the lock piece 60a contacts the stopper claw 50b of the lock member 50. When the lock member 50 moves to the position of the release position P4, the stopper piece 50b
The light lock lever 60 moves to a position where the light lock lever 60 is rotated in the unlocking direction against the spring 63.

The light lock door lever 60 is connected to the support shaft 6.
1 so as to be rotatable. The gear portion 60b of the light lock door lever 60 is a light lock door driver 6
2 and the rotation of the light lock door lever 60 causes the light lock door driver 62 to rotate as shown in FIG.
It is possible to move between the lock position of (a), (b) and (c) and the release position of FIG. 11 (d). The light lock door driver 62 opens the lid member 43 of the film cartridge 6 in the lock position of FIGS. 11A, 11B, and 11C, and closes the lid member 43 in the release position of FIG. 11D. The light lock door lever 60 is moved by a spring 63 as shown in FIG.
(A), (b), and (c).

The camera 1 is provided with a lock control member 64. This lock control member 64 controls the first position in FIG. 11A until the film is rewound after the film has been wound by the film feed motor M1.
The control claw 64a of the lock control member 64 is located at the position P5.
Engages with one side 60c1 of the lock portion 60c of the light lock door lever 60 to lock the lock member 50 at the lock position P3.
To the release position P4.

While the film is being rewound by the film feed motor M1, the control pawl 64 of the lock control member 64 is located at the second position P6 in FIG.
a engages with the other side 60c2 of the lock portion 60c of the light lock door lever 60 to lock the lock position P of the lock member 50.
3 to the release position P4.

In a state where the film cartridge 6 can be taken out, the lock control member 60 is in the position shown in FIG.
1 (c) is located between the first position P5 and the second position P6,
Since the control claw 64a of the lock control member 64 is not engaged with either one side 60c1 or the other side 60c2 of the lock portion 60c of the light lock door lever 60, the lock member 50
From the lock position to the release position in FIG. 11D.

As described above, the light lock door lever 60 is locked via the lock control member 64 until the film is rewound after the film is wound up and also while the film is rewound. The member 50 cannot be operated, and the lid opening / closing lever 41
Cannot operate the film cartridge 6
Is not possible.

In a state where the film cartridge 6 can be taken out, the lock of the light lock door lever 60 by the lock control member 64 is released, so that the lock member 50 can be operated and the lid opening / closing lever 41 can be operated.
To take out the film cartridge 6,
There is no double exposure due to accidental exposure or reuse.

The first position P5 of the lock control member 64 and the second position P5
The movement between the positions P6 is performed by the gear 6 of the lock control member 64.
4b is engaged with the spool driver driving gear 18, and in a state where the lock control member 64 is moved to the second position P6 by the rotation of the film feeding motor M1 in the rewinding direction, the film feeding motor M1 is rotated in the film winding direction. This is done by letting

As described above, since the lock control member 64 is moved by rotating the film feed motor M1, a special drive source is not required, so that miniaturization of the camera is not hindered and cost increase is small. .

The camera 1 has a lock control member 6
4 has an unlocked state detection sensor S12 for detecting an unlocked state between the first position P5 and the second position P6, and an unlocked state between the first position P5 and the second position P6 of the lock control member 64. , The lock can be reliably released by simple control. The lock control member 64 is connected via friction means to a spool driver driving gear 18 connected to the gear train 12 which is a driven member to which the driving force of the film feed motor M1 is transmitted. Is set to be in the first position P5 or the second position P6 so that the rotation of the gear train 12 is not hindered.

The gear train 12 and the spool driver holder 19 are connected via clutch means 70. In the clutch means 70, the projection 18a projecting to the inner peripheral side of the spool driver driving gear 18 and the projection 19a projecting to the outer peripheral side of the spool driver holder 19 abut to rotate integrally. A play 71 is provided between the inner periphery of the spool driver driving gear 18 and the outer periphery of the spool driver holder 19, and when the spool driver driving gear 18 is rotated in the opposite direction, after a predetermined rotation, the projection 18a And rotate again together. Further, the spool driver holder 19 and the spool driver 20 rotate integrally.

As described above, the clutch means 70 includes the spool driver driving gear 18 connected to the gear train 12,
Play 71 provided between spool driver holders 19
The rotation of the spool shaft 21 is restricted by the movement of the lock control member 64 between the first position P5 and the second position P6,
With the simple structure of the play 71, the rotation of the spool shaft 21 due to the movement of the lock control member 64 can be prevented.

The camera 1 has a cartridge cover 2
A cover opening / closing lever 41 for opening and closing the cover 3;
And a lid opening / closing lever micro-operation detection switch S11 for detecting a micro-operation to open the cover 1 when the lock member 50 is about to move from the lock position to the release position. Micro motion detection switch S11
Is turned on, the lock member 50 is turned off until it is turned off.
Does not move to the operation of the lock control member 64 which permits the movement from the lock position P3 to the release position P4. If the lid opening / closing lever minute movement detection switch S11 is turned on, the lock position P3 of the lock member 50 is turned off until it is turned off.
Lock control member 6 that allows movement from position to release position P4
By not shifting to the operation of No. 4, it is possible to save energy and quickly prevent failure of unlocking.

The first position P5 of the lock control member 64
A limiter is provided as shown in FIGS. 12 and 13 for the operation of moving from the position between the first position P5 and the second position P6.
The limit of the limiter is set to be equal to or less than the play amount of the play 71 between the inner periphery of the spool driver driving gear 18 and the outer periphery of the spool driver holder 19, and the first position P5 of the lock control member 64 is set to the first position. The movement between the position P5 and the second position P6 causes the spool shaft 21 to move.
Can be prevented from rotating.

FIG. 12 is a block diagram of an electric circuit of the camera. In FIG. 12, 141 is a control circuit for controlling the camera, 142 is a photometric circuit for measuring the luminance of the subject, 143 is a shutter drive control circuit for controlling the opening and closing of the shutter, and 144 is the distance to the subject Drive circuit 145 for driving the photographing lens and focusing based on the information measured by the distance measurement circuit 144, 147 stores adjustment data for photometry and distance measurement. The storage circuit 148 is a flash light emitting circuit for emitting a flash according to a signal from the control circuit 141, and 149 is a shutter drive control circuit 143.
A shutter position detection circuit for detecting the position of the blades of the shutter; 150, a film feed drive circuit for feeding the film; 151, a display unit drive control circuit for displaying information related to photographing on a display unit; Identifies whether the photographic film in the film cartridge 6 loaded in the film cartridge 6 is unexposed or in other use states,
A film cartridge control circuit 154 for opening / closing the opening / closing drive shaft 45 and the like is provided with a photometry / ranging start SW (S
1) Reference numeral 155 denotes an exposure start SW (S2).

The control circuit 141 includes a power switch 190, a zoom operation button 107, a mode setting button 1
09, a command signal is input from the date setting button 110 and the forced rewind button 111.

FIG. 13 is a flowchart of the rewind and the auto load.

When the forcible rewind button 111 is operated, the film feed motor M1 starts the reverse rotation drive, and the film is rewound (S101). Then, a film counter is displayed (S102), an abnormality is detected (S103), and if an abnormality is detected, the drive of the film feed motor M1 is stopped (S116), and a rewind abnormality detection process is performed. In the rewind abnormality detection processing,
Prepare a display and settings that require an operation to perform rewind.

If the abnormality detection is not performed, when the winding of the photographic film F is completed (S104), the passage time of each phase of the bar code of the data disk 42 of the film cartridge 6 is measured and stored (S10).
5). In this embodiment, the barcode BAR, SPA
The passage time before the sensor for each of the seven phases of CE (one rotation of the data disk) is measured, and the data is saved.

Based on the measured data, the data disk 42
Is rotated to a predetermined position after the detection of the base position. That is, the data disk 42 is rotated to the VEI position to be set (S106), and the motor stop control of the film feed motor M1 is performed (S107).

A 10 second timer is started (S10
8) The operation of the lid opening / closing lever 41 is detected during the 10-second timer (S110). If the timer is over (S109), the flow shifts to S116 to similarly perform the motor stop control and perform the rewind abnormality detection processing. If the lid opening / closing lever 41 is twisted, the lock mechanism cannot be released, so confirm that the lever is in the normal position (not operated).

[1/2 rotation time] of the data disk 42
The timer is started, and a time period during which the disk is not rotated beyond the play angle is set based on the saved data [one rotation time of the disk] (S111). The normal rotation drive of the film feed motor M1 is started (S112), the arrival at the unlock position is detected, and the timer is over (S11).
3) Then, the process proceeds to S116, in which the motor stop control is similarly performed, and the rewind abnormality detection processing is performed.

When it is detected that the film has reached the unlock position (S114), the motor stop control of the film feed motor M1 is performed (S115), and the rewind normal termination processing is performed.

In the automatic load control, a three-second timer starts (S117), and the lid opening / closing lever 4 is activated during the three-second timer.
The first operation is detected (S120). If the timer is over (S118), the flow shifts to S119 to perform motor stop control and perform auto load control delay processing. Prepare the display and settings that require the operation to execute the auto load.

When the operation of the cover opening / closing lever 41 is detected, the motor reverse rotation drive of the film feed motor M1 is started (S121), and the passage time of each phase of the code of the data disk 42 is measured and stored. One rotation] (S122).

The above data is calculated, and the information of the loaded photographic film F and the VEI setting at the time of loading are analyzed (S12).
3). The data disk 42 is rotated to the VEI position when the film cartridge 6 is loaded (S124).

Then, the motor stop control of the film feed motor M1 is performed (S125), and it is determined whether or not the film is at the VEI stop position (S126). If it is at the VEI stop position, the flow shifts to S108. [X] Loading of photographic film
Processing equivalent to rewind completion is executed.

If it is not at the VEI stop position, the motor forward rotation of the film feed motor M1 is started (S12).
7) The film feed control is performed up to the shooting start frame.

Immediately after the start of the normal rotation of the film feed motor M1, the lock of the cartridge lid 23 is once released, and when the rotation further proceeds, it is locked again. Thereafter, the data disk 42 starts rotating. Although the cartridge lid 23 is opened during the period when the lock is released, there is no problem because the data disk 42 is at the same position as the position where the film cartridge 6 is inserted.

[0083]

As described above, according to the first aspect of the present invention, the film is locked until the film is rewound after the film is wound up and also while the film is rewound. Since the lock is released in a state in which the cartridge can be taken out, there is no accidental exposure or double exposure by reusing.

According to the second aspect of the present invention, since the lock control member is moved by rotating the film feed motor, a special drive source is not required, so that miniaturization of the camera is not hindered and cost is reduced. Little increase.

According to the third aspect of the present invention, by detecting the unlocked state of the lock control member between the first position and the second position, the lock can be reliably released by simple control.

According to the fourth aspect of the present invention, the spool driver does not rotate due to the movement of the lock control member due to the simple structure provided by play provided between the driven member and the spool driver, and the data disc of the film cartridge is not rotated. Easy setting.

According to the fifth aspect of the present invention, when the operation of moving the lock member from the lock position to the release position is attempted, if the lid opening / closing lever minute operation detection switch is on, the lock is locked until it is turned off. By not shifting to the operation of the lock control member that permits the movement of the member from the lock position to the release position, energy-saving and prompt failure of unlocking can be prevented.

According to the sixth aspect of the present invention, the limit of the movement of the lock member from the lock position to the release position is set to be equal to or less than the play amount provided between the driven member and the spool driver. The rotation of the spool driver due to the operation of the lock control member that allows the movement from the to the release position can be prevented.

According to the seventh aspect of the present invention, even if the cartridge lid is opened at an unexpected timing, the film cartridge is taken out at the same data disk position as that in the loaded state, so that the unused photographic film is regarded as used. It does not occur that it becomes unusable or used and becomes unused and is subjected to double exposure.

According to the eighth aspect of the present invention, even if the cartridge lid is opened at an unexpected timing, the position of the data disk at the time of loading the film cartridge is set by the rewind direction control, and then the film is sent out. Since the film is fed up to the shooting start frame by switching to the operation in the winding direction, the unused photographic film is no longer used and becomes unusable, and the used photographic film is not used and double exposure does not occur.

[Brief description of the drawings]

FIG. 1 is a sectional view of a camera.

FIG. 2 is a sectional view showing a film feeding mechanism of the camera.

FIG. 3 is a plan view showing a film feeding mechanism of the camera.

FIG. 4 is a perspective view showing a cartridge chamber of the camera from the bottom side.

FIG. 5 is a perspective view of a film cartridge.

FIG. 6 is a front view showing a cartridge chamber.

FIG. 7 is a side view showing a cartridge lid opening / closing mechanism.

FIG. 8 is a front view showing a cartridge lid opening / closing mechanism.

FIG. 9 is a diagram showing a locked state of the cartridge lid.

FIG. 10 is a view showing an unlocked state of the cartridge lid.

FIG. 11 is a view showing the operation of a lock control member.

FIG. 12 is a block diagram of an electric circuit of the camera.

FIG. 13 is a flowchart of rewind and auto load.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Camera 4 Cartridge chamber 6 Film cartridge 23 Cartridge lid 50 Lock member 64 Lock control member M1 Film feed motor

Claims (8)

[Claims] A cartridge cover movably provided between an open position for opening the cartridge chamber and a closed position for closing the cartridge chamber so that the film cartridge can be taken out; A camera provided with a lock member movably provided between a lock position for locking and a release position for releasing the lock, wherein the film feeder is connected to a driven member to which a driving force of a film feed motor is transmitted. After the film is wound up by the motor, the film is rewound until the film is rewound, and is located at the first position to prevent the lock member from moving from the lock position to the release position. While the lock member is in the second position, the lock member is prevented from moving from the lock position to the release position. A camera provided with a lock control member positioned between the first position and the second position in a state where the cartridge can be taken out, and allowing the lock member to move from the locked position to the released position. . 2. The first position and the second position of the lock control member.
The movement between the positions is performed by rotating the film feed motor in the film winding direction with the lock control member moved to the second position by the rotation of the film feed motor in the rewinding direction. The camera according to claim 1, wherein: 3. An unlocked state detecting sensor for detecting an unlocked state between the first position and the second position of the lock control member.
The camera according to. 4. A play is provided between the driven member and a spool driver for driving a spool shaft of the film cartridge, and the lock control member is moved between the first position and the second position. The rotation of the spool driver shaft is restricted by the above (1) to (4).
The camera according to any one of the preceding claims. 5. A lid opening / closing lever for opening and closing a cartridge lid, and a lid opening / closing lever minute operation detecting switch for detecting an initial minute operation for opening the lid opening / closing lever, wherein the lock member is released from a locked position. If the lid opening / closing lever micro-operation detection switch is turned on when trying to enter the movement operation to the position, the operation of the lock control member that permits the movement of the lock member from the lock position to the release position until the switch is turned off. The camera according to any one of claims 1 to 4, wherein the camera does not move to (1). 6. A limiter is provided for the operation of moving the lock member from the lock position to the release position, and a limit of the limiter is set to be equal to or less than a play amount provided between the driven member and the spool driver. The camera according to claim 1. 7. The operation of reading a data disk after loading a film cartridge and sending the film from the film cartridge after completion is performed after setting the same data disk as when loading the film.
The camera according to claim 6. 8. When the film cartridge is loaded and the film feed motor is controlled in the rewind direction to read the information on the data disk, and the film is fed to the shooting start frame, the film rewind direction control is performed. The camera according to any one of claims 1 to 6, wherein the camera is set to a position of a data disc when a film cartridge is loaded, and then switched to a winding direction operation for feeding a film.